Elevator



D. A. BEAUDRY.

ELEVATOR. I APPLICATION FILED 0CT-.24| I919- Patented Apr. 6, 1920.

2 SHEETSSHEET 1- D. A. BEAUDRY. ELEVATOR.

APPLICATION FILED OCT. 24 19I9'. 7 1,335,719.. Patented Apr. 6, 1920; q

2 SHEETS-SHEET 2.

reasonable profit.

* orrn er f D IEUDONNE A. BEAUDRY, 0F GILBERTVILLE, MASSACHUSETTS.

ELEVATOR.

To all whom it may concern:

Be it known that I, DIEU'DONNE A. BEAUDRY, a citizen of the United States, residing at Gilbertville, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Elevators, of which the following is a specification, reference being had to the accompanying drawings. 7

This invention relates to an improved elevator, adapted for freightor passengers, and has for its object to provide a very slmple, ofiicient and practical device of this kind ca pable, when manufactured, of being pro-. duced at a relatively low cost and sold at a Another object of the invention is to provide an elevator, which may be operated by hand power, or by motor power, and whereln ropes, gears, or plungers for the supporting and-operation of the elevator car are el1m1- nated, thereby'greatly simplifying the construction of means for operating the car to ascend or descend.

A further object of the invention resides in the provision of means comprising opposite vertical tracks to be engaged by guides on the elevator car, in combination with a rotating member carried by the car having a spiral .thread including anti-frictional means adapted to operatively connect w1th the tracks, for causing'the car to ascend or descend. Y

A still further object of the invention is to provide a safety operating mechanism for the car and carried thereby, to insurepreventing the car from falling, in the. cases of other elevator cars heretofore used.

An additional object of'th-e invention 'consists in applying the operating mechanism to the car, on the body of the car itself, thereby not only simplifying the construction of such devices, but also facilitating the operation.

VJhilethe design and construction at presentillustrated and set forth is deemed prefera'li-le, it is obvious that as a result of a reduction of the invention toa more practical form for commercial purposes, the invention be susceptibleto changes, and the right *to these changes is-claimed, provided they 1919. Serial No. 332,939. 3

ance with the invention, showing the guide tracks, and the elevator car in position-and engaging them.

Specification of Letters Patent. Patented Apr. 6, 1920.

. Application filed October 24,

Fig. 2 is a. view in side elevation of the elevator, illustrating the operating pulley and its connections with the rotating member on the inside of the body of the car, whereby the car may be caused to ascend or descend.

Fig. 3 is a vertical sectional view on line- 33 of Fig. 2, showlng the interior .con-

. struction of the body of the car and alsothe Fig. 5 is a horizontal sectional viewon line 55 of Fig. .1;

Referring more especially to the drawings 1 and 2 designate vertically arranged parallel tracks, which are broad in cross sec tion, and are provided on their adjacent faces with transversely arranged rack teeth 3. Mounted on and adapted to operate between the tracks is an elevator car 4, the lower portion or base body 5 of which is hollow, a .d is adapted as a housing for the reception of the rotating member or car. operating device 6. This rotating member or car operating device is mounted upon a shaft 7 the upper and lower ends of which are mounted in ball bearings of the top and bottom of the housing or car base. This rotating member or car operatingdevice 6 is provided with a spiral thread 9. The teeth of the adjacent faces. of the tracks, are arranged or inclined as shown, to cooperate with the spiral thre'ad of the rotating memher or car operating device. It will be'noted that the teeth of the adjacent faces of the tracks are so arranged relatively to each other as to permit the. spiral thread topass from engagement ith the teeth of one of.

the oppositetrack, so that the rotating memerate to causefthe car toascend or descend. The spiral thread of the rotating member or car operating device consists of a "spiral band 10 secured to the rotatingvmember or car operating device,--on the periphery or the tracks, in engagement with the teeth of more the diameters of the rollers are sufficient to engage between the teeth of the *tracks, for instance so that the rollers may rest upon and engage the teeth under them,

without engaging the teeth above them, thereby permitting the rollers to very easily operate, without causing any undue friction, thereby allowing the. car to easily and quickly ascend or descend.

The elevator car-may be constructed preferably as shown, though not necessarily, for

- it is obvious that the car may be made as a cage afiair, similar to the cars used on passenger elevators. Furthermore, the opposite sides of the car are provided with spaced vertical guide flanges 12, which engage on opposite sides of the guide tracks, thereby guiding the elevator car during its ascending or descending movements. In the present instance, however, the body of the car comprises the base part 4, the opposing sides l3 and the base platform 14, upwardly from which the sides 13 of the car rise. The forward and rear'edges of the sides of the car have vertical braces 15 adjacent thereto but inforce the sides.

are reinforced transversely by the transbase body of the car.

secured to the outer face of each side, to re- These vertical braces 15 verse pieces 16, which are secured upon the outer faces of the car near their upper edges. The guide flanges 12 are secured to lateral projections 17, which extend from the upper portion of the outer faces of the sides of the car and from the opposite sides of the The base'body may be entirely closed in, to prevent access to the rotating member or car operating I vice, excepting when it is desired to lubricate the various parts. In order to permit access to the interior base body, one of the sides of the base body is provided with an opening '18, having a closure 19. Extending transversely of the elevator car and con nesting the upper edge portions of the car is a brace 20 consisting of two parts, so as to reinforce the upper parts of the sides, at

the same time holding' the sides rigid.

Fixed to rotate with one of the pintles of the rotating member or car' operating device there is a pulley 21, the groove 22 of which is engaged by an endless round belt or the like 23. The opposite parts of this belt extend laterally and substantially in parallelism, and are engaged over the pulof the sides of the elevator car body, and

on one end of this shaft an operating pulley 28 is mounted. The other end of the shaft 21 is mounted in a bearing of a vertical strip 29, which arches the operating pulley 28. The endless round belt after passing over the pulleys adjacent the bottom or floor of the car body, passes over the pulley 28.

When it is desired to cause the elevator car to ascend or descend, motionhmay be imparted to this shaft, thereby rotating-the pulley 28, which in turn will operate the endless round belt, thereby imparting movement to the rotating member or device, through the medium of a groove roller on the wheel. It is obvious that'any suitable power, such as a motor, gasolene or electric, may be geared to the shaft of the pulley 28, so as to impart motionthereto. For the convenience of illustration, simply a crank 31 is carried by the shaft, to impart motion thereto. When the rotating member or cooperating device is rotated, the spiral roller thread will feed into engagement with the opposite teeth of the tracks, thereby causing the car to ascend or descend. By means of the construction herein shown and de: scribed, it will be noted that elevator cars may be operated with safety, thereby preventing the car from falling or dropping, as in the cases where ropes, gears and plungers are employed for supporting and operating the car.

The invention having been set forth,what is claimed as new and useful is 1. In an elevator, the combination with vertical parallel tracks having opposed teeth spirally arranged, of an elevator operatively engaging said tracks, a member rotating in a horizontal plane and being carried by the car, said rotating member having a spiral anti-frictional thread engaging the teeth of the traclrs, said spiral anti-frictional thread comprising a spiral band in surrounding relation to the periphery of the rotating member and being spaced therefrom, anti-frictional rollers journaled between the band and the periphery of the rotating member, and a drivingelement carried by the car and being operatively connected with the rotating member for imparting motion thereto.

2. In an elevator, an elevator shaft having opposed parallel tracks provided with teeth spirally arranged, an elevator having band in spaced relation to the periphery, a'

plurality of anti-frictional elements mountecl upon the journals between the band and 10 the periphery of the drum, and cooperating with the teeth of the tracks foricali sing theelevator to move in a vertical plane in par allelism to the tracks, and driving means carried by the car of the'elevator and 0peratively connected with the drum for imparting motion thereto.

In testimonywhereof I hereunto affix my signature.

DIIEUDONNE A. BEAUDRY 

